<!doctype html>
<title>Selection.collapseTo(Start|End)() tests</title>
<div id=log></div>
<script src=http://w3c-test.org/resources/testharness.js></script>
<script src=http://w3c-test.org/resources/testharnessreport.js></script>
<script src=common.js></script>
<script>
"use strict";

// Also test a selection with no ranges
testRanges.unshift("[]");

for (var i = 0; i < testRanges.length; i++) {
	test(function() {
		selection.removeAllRanges();
		var endpoints = eval(testRanges[i]);
		if (!endpoints.length) {
			assert_throws("INVALID_STATE_ERR", function() {
				selection.collapseToStart();
			}, "Must throw InvalidStateErr if the selection's range is null");
			return;
		}

		var addedRange = ownerDocument(endpoints[0]).createRange();
		addedRange.setStart(endpoints[0], endpoints[1]);
		addedRange.setEnd(endpoints[2], endpoints[3]);
		selection.addRange(addedRange);

		// We don't penalize browsers here for mishandling addRange() and
		// adding a different range than we specified.  They fail addRange()
		// tests for that, and don't have to fail collapseToStart/End() tests
		// too.  They do fail if they throw unexpectedly, though.  I also fail
		// them if there's no range at all, because otherwise they could pass
		// all tests if addRange() always does nothing and collapseToStart()
		// always throws.
		assert_equals(selection.rangeCount, 1,
			"Sanity check: rangeCount must equal 1 after addRange()");

		var expectedEndpoint = [
			selection.getRangeAt(0).startContainer,
			selection.getRangeAt(0).startOffset
		];

		selection.collapseToStart();

		assert_equals(selection.rangeCount, 1,
			"selection.rangeCount must equal 1");
		assert_equals(selection.focusNode, expectedEndpoint[0],
			"focusNode must equal the original start node");
		assert_equals(selection.focusOffset, expectedEndpoint[1],
			"focusOffset must equal the original start offset");
		assert_equals(selection.anchorNode, expectedEndpoint[0],
			"anchorNode must equal the original start node");
		assert_equals(selection.anchorOffset, expectedEndpoint[1],
			"anchorOffset must equal the original start offset");
		assert_equals(addedRange.startContainer, endpoints[0],
			"collapseToStart() must not change the startContainer of the selection's original range");
		assert_equals(addedRange.startOffset, endpoints[1],
			"collapseToStart() must not change the startOffset of the selection's original range");
		assert_equals(addedRange.endContainer, endpoints[2],
			"collapseToStart() must not change the endContainer of the selection's original range");
		assert_equals(addedRange.endOffset, endpoints[3],
			"collapseToStart() must not change the endOffset of the selection's original range");
	}, "Range " + i + " " + testRanges[i] + " collapseToStart()");

	// Copy-paste of above
	test(function() {
		selection.removeAllRanges();
		var endpoints = eval(testRanges[i]);
		if (!endpoints.length) {
			assert_throws("INVALID_STATE_ERR", function() {
				selection.collapseToEnd();
			}, "Must throw InvalidStateErr if the selection's range is null");
			return;
		}

		var addedRange = ownerDocument(endpoints[0]).createRange();
		addedRange.setStart(endpoints[0], endpoints[1]);
		addedRange.setEnd(endpoints[2], endpoints[3]);
		selection.addRange(addedRange);

		// We don't penalize browsers here for mishandling addRange() and
		// adding a different range than we specified.  They fail addRange()
		// tests for that, and don't have to fail collapseToStart/End() tests
		// too.  They do fail if they throw unexpectedly, though.  I also fail
		// them if there's no range at all, because otherwise they could pass
		// all tests if addRange() always does nothing and collapseToStart()
		// always throws.
		assert_equals(selection.rangeCount, 1,
			"Sanity check: rangeCount must equal 1 after addRange()");

		var expectedEndpoint = [
			selection.getRangeAt(0).endContainer,
			selection.getRangeAt(0).endOffset
		];

		selection.collapseToEnd();

		assert_equals(selection.rangeCount, 1,
			"selection.rangeCount must equal 1");
		assert_equals(selection.focusNode, expectedEndpoint[0],
			"focusNode must equal the original end node");
		assert_equals(selection.focusOffset, expectedEndpoint[1],
			"focusOffset must equal the original end offset");
		assert_equals(selection.anchorNode, expectedEndpoint[0],
			"anchorNode must equal the original end node");
		assert_equals(selection.anchorOffset, expectedEndpoint[1],
			"anchorOffset must equal the original end offset");
		assert_equals(addedRange.startContainer, endpoints[0],
			"collapseToEnd() must not change the startContainer of the selection's original range");
		assert_equals(addedRange.startOffset, endpoints[1],
			"collapseToEnd() must not change the startOffset of the selection's original range");
		assert_equals(addedRange.endContainer, endpoints[2],
			"collapseToEnd() must not change the endContainer of the selection's original range");
		assert_equals(addedRange.endOffset, endpoints[3],
			"collapseToEnd() must not change the endOffset of the selection's original range");
	}, "Range " + i + " " + testRanges[i] + " collapseToEnd()");
}

testDiv.style.display = "none";
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